在物理学的世界里，我们经常发现最简单的问题最难回答。
In the world of physics, we often find that the simplest questions are the hardest to answer.
化学是物质的科学，但我更愿意将其视为变化的科学。
计算的未来不在于硬件，而在于软件。
Your most unhappy customers are your greatest source of learning.
Take a simple idea, and take it seriously.
The moment you stop believing, you're already defeated.